Answer:
Step-by-step explanation:
4
+
7
=
−
2
\frac{x}{4}+7=-2
4x+7=−2
4
+
7
−
7
=
−
2
−
7
Answer:

Step-by-step explanation:
Given
Cost = $78,600 when Printing Press = 12
Cost = $82,380 when Printing Press = 19
Required
Determine the linear equation
From the given parameters; Cost is a function of Printing Press
<em>Represent Cost by C and Printing press by x;</em>
<em>This implies that C = f(x)</em>
The given parameters can then be modeled as; 


The first step is to calculate the slope, m;




The linear equation can then be calculated using slope formula

Substitute 540 for m and 

Multiply both sides by x - 19


Open bracket

Add 82380 to both sides




Hence;

a - 4b
= (-7) - 4(2)
= - 7 - 8
= <u>-</u><u> </u><u>1</u><u>5</u><u>.</u>
Hope it helps ya :))
Answer: x=3
Step-by-step explanation:
to make y=-4 from -12 you have to divide by 3. so divide the 9 by 3 to get 3 which is your answer